<html>
<head>
<title></title>
<style>
#bc{ width:800px; height:600px; background:#d2d2d2;}
#bc2{ width:800px; height:600px; background:rgb(212,36,36);}
#bc3{ width:800px; height:600px; background:#d4d4d4;}
#bc4{ width:800px; height:600px; background:rgb(212,36,36);}
</style>
</head>
<body>
<a href="#bc">satu</a>
<a href="#bc2">satu</a>
<a href="#bc3">satu</a>
<a href="#bc4">satu</a>
<div id="bc"></div>
<div id="bc2"></div>
<div id="bc3"></div>
<div id="bc4"></div>
</body>
</html>